LG 43LF513A Service Manual page 36

Standard Repair Process
Error Symptom
Content
Check input
signal Signal
-RF Normal
-External Input
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Only for training and service purposes
Wrecked audio / Discontinuation / Noise
Y
N
(When RF signal is not
received)
Request repair to external
cable/ANT provider
(In case of
External Input
signal error)
Check and fix
external device
C. Audio Error
Wrecked Audio/ Check and replace
Discontinuation/
Noise for all audio
Wrecked Audio/
Discontinuation/ Replace Main B/D
Noise only for D-TV
Wrecked Audio/
Discontinuation/
Noise only for Analog
Wrecked Audio/
Connect and check
Discontinuation/
Noise only for
External Input
Established date
Revised date
☞A13
Check Voltage 19V
speaker and
of Adaptor
connector
Normal
Voltage
Replace Adaptor
other external
device
N
Normal
Audio
Y
Check and fix external device
10/14
Y
N
Replace Main B/D End
LGE Internal Use Only